Question

Here is a nutritious agar plate that was inoculated using a finger with 3 different treatments & incubated: (3) unwashed finger, (2) finger washed with hot water & soap & (1) finger washed with Purell.

Since there are no fungi on this nutritious agar plate, was the aseptic technique well done?
Which of the 3 choices has the most bacteria colonies?
Which of the 3 choices is the best to clean yourself?
Is the observed result the one expected?
Explain the 3 scenarios: (keyword: bacteriocin)

Answer 1

It is true that there is no fungi, but bacteria is present in inwashed hands and hands washed with water and soap. It can be considered that washing with Purell is a proper aseptic technique et 2. Bacteria colonies are most seen in 3 - unwashed finger 3. The best choice to clean yourself is 1 - wash with Purell your hands 4. Many think that washing your hands with soap and water completely removes all bacteuas. But it is not the case.

5. In case 1) Hand es washed with Purell It contains ethyl alcohol, which is bactericidal . It kills bacteria by protein denaturation and dissolving the lepid membrane. In case 2) Hand is washed with soap and water. It does not remove all bacterias. It contains many In case 3) Hand is not washed bacterias: Bacteriouns are ribosomally synthesized antimicrobial peptides produced by bacteria that have bactericidal or bacteriostatic effects on similar a closely related bacterial strains